#include <cstdio>
#include <cstdlib>
#include <list>


typedef struct  LNode
{
	int data;
	struct LNode*next;
}LNode ,*ListHead;

LNode *head = NULL;


void test()
{
	LNode*temp = head;
	while (temp)
	{
		printf("%d\n",temp->data);
		temp = temp->next;
	}
	
}

int main()
{
	test();
	return 0;
}